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US 9,433,972 B2Granted
Coated paper having a coating structure with controlled distribution of latex and method for preparing the same
AssigneeLG Chem, Ltd.
InventorsSeung-Uk Yeu, Chang-Sun Han, Young-Min Lee, Byoung-Yun Kim
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Abstract
Disclosed is coated paper having a coating structure in which styrene-butadiene latex distribution of a paper coating layer is controlled in order to reduce fold cracking of the coated paper and a method for manufacturing the same. The coated paper in which different types of latexes are separately applied to two coating layers exhibits considerably improved stiffness and reduced fold crack, as compared to the existing coated paper.
Claims4
A method for preparing coated paper comprising:
- preparing a first coating solution comprising a latex having a particle size of 70 to 120 nm and a glass transition temperature of 10 to 30° C. and a second coating solution comprising a latex having a particle size of 120 to 200 nm and a glass transition temperature of −30 to 0° C.;
- coating a base paper with the first coating solution, followed by drying, to form a first coating layer as a pre-coating layer;
- and
- coating the first coating layer with the second coating solution, followed by drying, to form a second coating layer as a top coating layer,
- wherein a total thickness of the coating layers of the first coating layer and the second coating layer is within the range of 20 to 60 μm.
2 more elements
Dependencies are inferred from the claim text.